Major improvement to bi-directional liquid provers is announced in this SCS (Straight Calibrated Section) Prover. Water draws in this manufacturer’s shop and in the field by independent third-parties indicate 0.002% to 0.007% repeatability for SCS. The over-inflation of the ball was 2% for lower pressure drop.
These provers do not require special alignment flanges to keep costs lower. Their calibration section can be rolled out and inspected without needing a water draw. There are also no alignment flanges or elbows in the calibrated section.
SCS is said to be especially suited for Coriolis and ultrasonic liquid meters manufactured with pulses because flow is not disrupted by the ball passing through elbows and flange sets. SCS Prover comes in 3 to 42-in. line sizes; ANSI 150 to 900.
Welker Flow Measurement Systems Incorporated
13901 West Bellfort, Sugar Land TX 77498